Bubble-pipe



J. L. GILCH BUBBLE APPLICATION FILED MAR. 8, I91 1,330,701. r

WED-AUG. 8,1919.

Patented Feb. 10,1920,

JOHN L. GILCI-IRIST, 0F VJILKINEBURG, PENNSYLVANIA.

BUBBLE-PIPE.

Specification of Letters Patent.

Patented Feb. 10, 1920.

Application filed March 8, 1918. Serial No. 221.202. Renewed August 8. 1919. Serial No. 316.182.

To all whom it may concern:

Be it known that I, JONH L. GILOHRIST, a citizen of the United States, residing at Wilkinsburg, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in Bubble- ]?ipe's, of which the following is a specification.

This invention relates to a bubble pipe and has for its primary object to provide a pipe capable of supporting its own liquid and discharging the same in the necessary predetermined quantity to make successive bubbles.

An object of the invention is to construct a pipe to accomplish the foregoing results which may be cheaply manufactured and in which the parts are so associated that they may be disassembled and cleaned and quickly reassembled by an unskilled person.

Besides the above my invention is distinguished in the novel manner of arranging the aperture and the stem so that atmospheric pressure may be reduced for allowing the flow of a predetermined quantity of liquid to a position to form a bubble and then atmospheric pressure increased for expanding the bubble.

With these and other objects in view the invention will be better understood from the following detailed description taken in connection with the accompanying drawing wherein Figure 1 is a vertical sectional view of the pipe.

Fig. 2 is a horizontal sectional view.

Fig. 3 is a top plan view of-the base.

My improved bubble pipe consists of a receptacle 1 stamped to have a depressed base 2 surrounded by a groove 3 that communicates with the interior of the recep- Frictionally engaging the depressed base portion 2 is the correspondingly shaped end of a base 9 which for the sake of cheapness may be made of wood. This base has formed therein a pair of cone shaped passages 10 communicating at their apex as indicated at 11. From this arrangement it will be seen that upon passage of liquid from the receptacle through the aperture 4 the same will be fed toward the point 11 where the same will be held suspended due to the contraction of the passage at this point. Communicating with the passage 10 at a point directly below the aperture 14 is a stem 12 which may be of reed or rubber or other sanitary material.

In the initial uses of the pipe the water in the receptacle is agitated until a certain amount of the soap is held in suspense in the water and when this takes place the pipe is ready to blow bubbles. To accomplish this latter operation it is necessary for the user to momentarily reduce atmospheric pressure in that portion of the passage 10 adjacent the aperture 4: for compensating for the decrease in pressure within the receptacle 1 with a result that the required amount of liquid is discharged through the aperture 4 and passed through the passage 10 to the point 11. When this takes place atmospheric pressure is increased in the passage 10 by the breath of the user and this increase in pressure causes the bubble to be formed. I find from practical use of the pipe that this increase and decrease of air pressure adiacent the aperture 4 may he ouicklv chan d for forming a series of bubbles such as when forming chain bubbles.

From the fore oing description taken in connect on with the accompanying drawing it should be apparent that I provide a deice admirablv adapted for the purpose inten ed and which ma be manufactured and sold at a comparatively low cost. with the ad antage that t e device is nou-lealmble.

Having described my invention what I claim is:

1. A bubble pipe comprising a receptacle having a detachable top and its bottom depressed to form a recess there being an aperture in the bottom of the receptacle. a base frictionally engaging the walls of said recess and provided with two cone shaped passages that communicate with each other at their apex and a stem arranged in the base and having an end thereof arranged to one side of said apex.

2. A bubble pipe comprising a receptacle having its bottom depressed to form a recess with an aperture in the depressed portion, said receptacle being further provided with a soap supporting ledge a detachable cap for the receptacle, a base frictionally engaging the depressed bottom portion of said receptacle and provided with a bubble passage and a stem communicating with said bubble passage.

In testimony whereof I afix my signature.

JOHN L. G ILGHRIST. 

